What I find interesting is that nobody mentions Denver. The Broncos are doing a fantastic job this season and are on fire, being one of now only two teams with only one loss, as Kansas City looses to the Chargers today making them 9-2. Kansas City has a fantastic defense, but they aren't really a team. They have several unbalances and balances, making them go all over the place. They had a devastating loss to Denver and then San Diego this week. Seattle is a fantastic team as well - They cooperate, work together, and are a great team to fight against. I believe this year's Super Bowl will be the Denver Broncos against the Seattle Seahawks.
As for the winner, I choose Denver. Not because they are my favorite and home team, but because they are a working machine. They have strategy and one of the best quarterbacks in the history of football, not to mention the #1 offense and defense in the NFL.
Sorry for this essay, I lecture a lot about what I like xD